Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
830 Petropolitana (A916 QE)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000830
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06445262056425899 3.6478e-08  
a 3.210492647019346 1.6226e-08 au
q 3.003567982616664 1.2072e-07 au
i 3.801246051892143 4.9191e-06 deg
node 340.2923523382854 6.1584e-05 deg
peri 90.45152948723636 7.2805e-05 deg
M 229.2294541813974 4.0198e-05 deg
tp 2459363.743970123243
(2021-May-29.24397012)
0.00023594 TDB
period 2101.14462338874
5.75
1.5929e-05
4.361e-08
d
yr
n .1713351836863993 1.2989e-09 deg/d
Q 3.417417311422027 1.7272e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2883  
   data-arc span      37714 days (103.26 yr)  
   first obs. used      1916-09-03  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44716  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:49:10  

Additional Information
 Earth MOID = 2.02094 au 
 Jupiter MOID = 1.77522 au 
 T_jup = 3.185 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.10   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
diameter diameter 41.328 km 0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 39.0 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.215   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.899   0.010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=5.04, mean=7.32, max.=9.59) deg.
U-B UB 0.500   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=9.59 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

830 Petropolitana (A916 QE)          Discovered 1916-Aug-25 by Neujmin, G. at Simeis
Independent discovery Sept. 3 by M. Wolf, Heidelberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1951-Feb-18 00:33 00:02 Jupiter 1.93926988647931 1.93926928161666 1.93927049134251 4.02043275296497 3.91028537007032 2433695.522862144 1.68390059029832 82.3515730293652 19.5323342189536 77.8416941977993 3461512.48203155 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
1962-Mar-24 11:06 00:01 Jupiter 1.88399416706816 1.88399368169393 1.8839946524424 3.62443730499372 3.49819501296195 2437747.962291017 1.38102996277167 56.8909253956075 17.2484809777522 81.5977857150227 2984667.63870982 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
1973-May-06 12:28 00:01 Jupiter 1.86847867262198 1.86847827819622 1.86847906704774 3.28185131616659 3.14068528072244 2441809.019612642 1.0688069477213 45.2042946793439 13.8533375459753 85.4427443143398 3160058.46526835 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
1984-Jun-25 08:57 < 00:01 Jupiter 1.89496756661619 1.89496719444778 1.89496793878461 3.04822967864163 2.89788435094069 2445876.872611599 0.76514676107501 46.6439472465287 12.0342549607167 82.2732031091632 3673319.79337394 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
1995-Aug-20 21:00 < 00:01 Jupiter 1.94468548594428 1.9446851001806 1.94468587170806 2.95727061615791 2.8061244315191 2449950.374916102 0.484526576459113 46.9519043522882 11.3815316989986 79.4414823743452 3983867.35326379 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
2118-Jan-07 12:00 00:02 Jupiter 1.99737623018031 1.99737566606368 1.99737679429751 4.23241145375798 4.13100127600556 2494650.000128099 2.34079286056747 95.1057163616984 20.2435981559498 80.907032023421 3914485.92451109 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
2129-Feb-03 20:18 00:03 Jupiter 1.90308707108729 1.90308653825327 1.90308760392207 3.81216085458767 3.6935638665311 2498695.345694152 2.52693110467134 114.002868006901 18.6643102697363 84.103069615486 3399877.47732473 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
2140-Mar-12 07:17 00:03 Jupiter 1.84545732531692 1.84545689629916 1.84545775433469 3.44749210435563 3.31168352299602 2502749.803458435 2.70169892785253 82.6616418983413 16.0989554749591 88.6008303913873 3053720.25420123 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
2151-Apr-28 07:49 00:03 Jupiter 1.83578849469107 1.83578808193548 1.83578890744656 3.16683698364533 3.01762616928797 2506813.825564682 2.89732503414433 46.4656375145505 18.9882207654208 88.5596087843759 3043617.44600927 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
2162-Jun-19 22:55 00:03 Jupiter 1.87300551431226 1.87300496517179 1.87300606345294 2.99712692877571 2.84223803612636 2510884.454551961 3.12832393497015 58.5169204902055 19.9062431709784 69.2497709078402 3708777.86048683 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
2173-Aug-15 02:21 00:03 Jupiter 1.93902516847702 1.93902446234309 1.93902587461139 2.96711044217199 2.8160408879688 2514958.597961454 3.38916679513621 72.5800755658233 17.50383820786 66.5736541610318 4013938.33365524 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49

Alternate Designations
 A916 QE = 1933 RK = 1949 KW = A917 YD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-18 06:09 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin